Exchange of large cations and charged complexes with amine intercalates of zirconium phosphates

Ion exchange reactions of n-butylamine intercalates of tin(IV) hydrogen phosphate and hydrogen uranyl phosphate with cobalt(III) complexes

“…The observed composition results from the "covering effect" of the guest molecule; that is to say, the complex ion bonded to phosphate groups impedes bonding at an adjacent site, as this site is now covered. A similar composition was seen when BAZrP was ion exchanged with tetraamminecopper(I1) (9). With BAUP there was a complete ionic exchange with the complex cations.…”

“…~]~+ were exchanged using the monohydrogen forrn, or the wider-spaced n-butylaminea-ZrP intercalate (9,10). Cr(II1) Werner complexes have also been exchanged into HUP (1 1,12).…”

From Microporous to Mesoporous Molecular Sieve Materials and Their Use in Catalysis

“…33 This situation arises from several different things: the nonparallel stacking of layers, the layers not being of uniform length, and also the presence of stacking disorder. 34 Even though the most investigated substrates to be pillared include smectite clays, 35 phosphates and phosphonates of tetravalent metals, [36][37][38][39][40] and layered double hydroxides, [41][42][43] the ones showing most promising potential belong to the first group. In this case the main catalytic objective was directed to prepare cracking catalysts for FCC uses.…”

Intercalation of polyetheramines into α-zirconium phosphate

“…5 This layered solid acid has an interlayer spacing of 7.6 A ˚,6 too small to undergo pillaring reactions because the layers do not swell in aqueous media. However, by use of an alkyl amine such as butyl or hexylamine, 7 the interlayer distance is increased to allow uptake of many cationic complexes 8 and pillaring agents. 9 Pillaring has also been achieved by use of propylamine and/or tetramethylammonium ions to completely exfoliate the layers.…”